Blog & Notes
Software guides, educational content, travel notes, and personal experiences
Total 175 posts
When Is Gemini 4 Carbon Coming? Who Can Use It?
Right now only selected cyber defenders can use Gemini 4 Carbon. It is not in the Gemini app, the API or Antigravity, and Google has given no date.
What Is Gemini 4 Carbon? Cybersecurity, Price, Access
Google announced Gemini 4 Carbon on Oct 28: #1 on Artificial Analysis at 59, same price as Argon. For now it is open only to selected cyber defenders.
Gemini 4 Carbon vs Argon vs Claude Opus 5.5 vs GPT-6 Astra
Gemini 4 Carbon is first on the index but not everywhere: Opus 5.5 leads agentic coding, Astra leads FrontierSWE, and its error rate is higher than Argon's.
Seoul Day 1: Yonsei, Seonyudo Park and Paris Park
My first day in Seoul: an 8,800 won chicken burrito, Yonsei University, a public piano on Seonyudo, Paris Park and a 3,600 won break at Mega Coffee.
Whistle and Phonon 2: The Smallest Speech-to-Text Models
Whistle is 16.9 MB and runs on a CPU in seven languages; Phonon 2 transcribes an hour of audio in about 20 seconds on a MacBook Air. Setup and comparison.
What Is OpenAI Dots? Open-Source Open Dots Alternatives
OpenAI Dots is a persistent agent with its own computer that keeps working when you are away. Who gets it, its safety controls, open-source Open Dots options.
What Is ElevenLabs v4? The Emotive Text-to-Speech Model
ElevenLabs v4 produces emotive speech in 90+ languages. Bracketed audio tags steer tone and effects, and the free plan includes 10,000 credits a month.
What Is Comfy Agent? An Agent That Builds ComfyUI Nodes
Comfy Agent is an agent built into ComfyUI: describe what you want and it plans, builds and runs the workflow. Comfy Cloud only for now, free to try.
What Is Claude Sonnet 5.5? Benchmarks, Cost, Free Plan
Claude Sonnet 5.5 is now the free plan's default model. It scores 70.6% on Terminal-Bench 4.0 at $2 / $10 per million tokens. How it compares.
What Are InSpatio World 1.5, Sol Refiner and PixelUMM?
InSpatio World 1.5 roams a scene from an image, Nvidia's SoL-Refiner upscales to 4K in one step (27x faster on MiniMax H3), PixelUMM has no VAE.
Weekly AI News: Science, Robots and Open Models
AI found counterexamples in plasma physics and cracked Napoleon's 217-year-old coded letter. A robot played badminton, and new open models arrived.
Cheat Checks on Mobile: Server-Authoritative Racing in Godot
BOINGWARD's 8-player race server: why WebSocket, how movement is validated, and why honest bots were flagged as cheaters in a test over a phone's mobile data.
Pogo Stick Physics in Godot: A Character That Bounces Itself
BOINGWARD's pogo physics: auto-bounce with RigidBody3D, the launch formula, taming a snowballing speed, and a test that matches at 30, 60 and 144 fps.
Level Design from Measured Metrics, Checked by a Bot
In BOINGWARD, courses are generated from measured bounce values and a bot tries every jump with the real physics. The medal times come from that same bot's run.
Ideogram 4.5 vs Flux 3 Image: New AI Image Models
Ideogram 4.5 keeps pixels intact across multi-turn edits, Flux 3 Image adds 10 references and native 4K. Features, access and which fits which job.
What Is GPT-6.1 Sol? Price, Performance, Who Can Use It
GPT-6.1 Sol offers near-Astra intelligence at a fifth of the price: $2 / $10. New plan tiers, Ultrafast speed and who can use it, explained.
Risk and Reward: Designing Air Tricks for a Pogo Game
From a one-sentence wish to a system defined by numbers: how air tricks in BOINGWARD became an optional, risky reward that does not depend on frame rate.
DMAD and PDMD: 4-Step AI Video Generation Explained
ByteDance's DMAD and PDMD run MiniMax H3 in 4 steps. On VideoGen-Eval, PDMD's total score beats the 50-step teacher model.
A 3D Game in One Day: Building BOINGWARD with AI Agents
I started from a Unity design pack and switched to Godot the same morning. Parallel Claude Code sessions produced 148 commits and a playable 3D pogo game.
What Is LTX 2.5? Free Open-Source AI Video Generator
LTX 2.5 is a 22-billion-parameter open-weight model that generates video with sound. Here is what it does, its license, why it counts as free, and who it suits.
What Is Hermes Agent? How to Install (Mac, Linux, Windows)
Hermes Agent is Nous Research's open-source terminal agent with memory and skills. One-line install, first setup and model choice, step by step.
What Is Gemini 4 Pro (Argon)? Features, Price, Benchmarks
Google announced Gemini 4 Argon on Sept 30: 1M output tokens, $2/$10 intro pricing, 77.9% on DeepSWE. Open to Pro and Ultra in the Gemini app and Antigravity.
LTX 2.5 Requirements and Speed: How Much VRAM?
The official minimum for LTX 2.5 is 32 GB of VRAM. What happens on 24 GB and 16 GB cards, how FP8 and INT8 save memory, and the generation times people report.
How to Install LTX 2.5 in ComfyUI: Step-by-Step Guide
Install LTX 2.5 with ComfyUI templates, by adding nodes manually, or from the Python command line. File list, folders, and fixes for the most common errors.
How to Install Gemini 4 Pro Argon? Who Can Use It?
Gemini 4 Argon is open to Pro and Ultra subscribers in the Gemini app and in Antigravity. On Pro, Argon has its own weekly-only quota. Nothing to install.
Hermes Agent: Telegram, Scheduled Tasks and Security
Connect Hermes Agent to Telegram, automate it with cron and run it safely: BotFather, allowlists, approval modes and Docker isolation.
Gemini 4 Argon vs Claude Opus 5.5 vs GPT-6 Astra
Gemini 4 Argon leads on legal, finance and long software tasks but trails on terminal and science tasks. Three models compared with a benchmark table.
Free AI Video Generation with LTX 2.5: Prompts and Settings
Generate your first video with LTX 2.5: text, image, and first/last-frame workflows, prompt structure, resolution and frame rules, multi-shot generation, audio.
Space Bunny Alpha vs Other AI Agents
Space Bunny Alpha compared with Claude, GPT, Gemini and free open models: price, the 1M context window, multimodal input and agent capabilities.
Space Bunny Alpha: 1M Context and Multimodal Input
What a one-million-token context window really holds, how image and video input share that budget, and how to measure and manage your token budget.
LongCat 2.5 Preview and Competing AI Models
Meituan's LongCat-2.5-Preview against its rivals: published benchmark scores, price, context, thinking mode and the transparency angle.
How to Install Space Bunny Alpha: Step by Step
Setting up Space Bunny Alpha via OpenRouter: the API key, the first request, Python and TypeScript samples, image input, open-source agents.
How to Install LongCat 2.5 Preview: News and Guide
Meituan's LongCat-2.5-Preview is out: 1M context, image input, optional thinking mode and $0.006 cached input. Here is the step-by-step setup.
Building an AI Agent With Space Bunny Alpha
From tool schema to loop: writing a working coding agent on Space Bunny Alpha, feeding tool errors back to the model and locking the output to JSON.
Is Tiny Glade on Mobile? iOS, Android and How to Play It
Tiny Glade has no official iPhone or Android version. Here is where to get it safely, two ways to play it on your phone and similar games for mobile.
Procedural Stone Walls, Gates and Bridges in Godot
How a finger stroke in Kalecik becomes a stone wall, an arched gate, a bridge or a house: smoothing, seeded masonry and chunked meshes in Godot 4.
The Game That Heated My iPhone: Godot Mobile Performance
My Godot game made an iPhone 15 Pro Max hot. The root cause was 120 fps; the fixes were a frame-rate governor, shadow proxies, grass chunks and threads.
Royalty-Free Game Music: Generating Every Sound in Code
Kalecik uses no recordings: stones, birds, sheep and 37 music pieces were all generated in Python. No loops, a music watchdog, and LUFS instead of ears.
Building a Mobile Game with AI Agents: Kalecik
From an empty folder to an iPhone: how I made Kalecik by directing five parallel Claude Code sessions, what I decided myself, and where we hit walls.
Automating App Store Connect Release Prep with the API
How Kalecik's App Store prep runs on the API: a JWT, a price schedule, listings in 50 locales, engine-rendered screenshots and a one-command upload.
Flutter: Light and Dark Themes with ThemeData
Building a Flutter theme with ThemeData: ColorScheme.fromSeed, light and dark themes, ThemeMode, reading with Theme.of, TextTheme, component themes, extensions.
Flutter: Using TextField and TextEditingController
Flutter TextField guide: TextEditingController and dispose, InputDecoration, keyboard types, inputFormatters, password fields, FocusNode and onChanged.
Flutter: Layering Widgets with Stack and Positioned
Flutter Stack and Positioned guide: how a Stack sizes itself, fit, alignment, clipBehavior, Positioned.fill, PositionedDirectional, badge and overlay recipes.
Flutter: Local Data Storage with SharedPreferences
Storing theme and settings with shared_preferences in Flutter: SharedPreferencesAsync, WithCache vs the legacy API, the migration helper and what not to store.
Flutter: HTTP Requests and REST APIs
GET, POST, PUT and DELETE with Flutter's http package, JSON to model classes, status codes, timeouts and loading and error states with FutureBuilder.
Flutter: BottomSheet and showModalBottomSheet
Flutter's showModalBottomSheet: returning values, isScrollControlled, useSafeArea, showDragHandle, keyboard insets, DraggableScrollableSheet, persistent sheets.
What Is JEV? The Reflex Layer of AI (TypeSafe's System One Model)
JEV is not a chat model; it is a model that decides. The System One idea, the three question types, pricing and limits, starting from your first call.
What Is Higgsfield? A Practical Start to Making Video with AI
Which models Higgsfield hosts, how credits really work, how to produce your first shot, and which tool to reach for on which job.
The Real Cost of Building 5 Apps with Vibe Coding: 3 Months, $60
LevelUpStudy, Recapday, MimBop, Talkamble and Golden Pixel. Model subscription, store fees, the hidden line items, and what actually turns out expensive.
Running a Trilingual Blog Without Breaking hreflang
Nearly 400 posts in three languages: how I stopped hreflang from silently disappearing, killed CLS and fixed an icon font cached for a year, with code.
Making Video with AI: The Complete Guide from Idea to Publish
Script to storyboard, generation to edit, captions to thumbnail: the whole workflow for making video with AI, with tool selection and the cost maths.
JEV Use Cases: 10 Real Scenarios and What They Cost
From comment moderation to agent tool selection, model routing and RAG filtering: ten scenarios where JEV earns its place, with code and cost comparisons.
JEV Question Types: Using Choice, Score and Noul Properly
The three JEV question types, the rules for writing criteria, the difference between probability and confidence, and why dozens of questions belong in one call.
Higgsfield Genjutsu: Rewriting Footage You Already Shot (with Blender)
Genjutsu keeps the motion and rebuilds the scene. Here are its two modes, its real limits, and how to turn a rough Blender block-out into an action shot.
Google Flow or Higgsfield? Comparing the AI Video Tools
Flow's scene building against Higgsfield's model range: how credits work, what each is genuinely good at, and when to pick which.
Coding with Free AI: opencode and the Cheap Model Stack
Plugging your own key into open-source opencode and running free or near-free models: setup, provider config, and what free actually costs you.
Wiring JEV Into Your System: Harness, Cost and Known Limits
On its own JEV produces a cloud of probabilities. How to build the harness that turns it into action, which patterns to use, and where the model is weak.
Shipping an Animated App with Higgsfield and Fable 5.1
Generate the character, backdrop and animations, then drop them into the app: the MCP connector, screen-recording context, Lottie and Expo previews.
SwiftUI @State, @Binding and @Observable: Data Flow Guide
When to use @State, @Binding, @Observable, @Bindable and @Environment in SwiftUI, how they map to ObservableObject, with a decision table and common bugs.
Swift Struct vs Class: Value and Reference Types Explained
Learn the difference between struct and class in Swift with runnable examples: copying, mutating, let, ===, inheritance, deinit and how to choose.
Swift Closures Explained: $0, @escaping and [weak self]
Learn Swift closure syntax step by step from the full form to $0 shorthand: trailing closures, capturing values, @escaping, retain cycles and [weak self].
Swift async/await Guide: Tasks, Actors and @MainActor
From completion handlers to async/await: Task, async let, TaskGroup, @MainActor, actors, cancellation and a JSON API call with URLSession in SwiftUI.
Sorting Algorithms Exam Questions with Worked Solutions
Bubble, selection, insertion, merge and quick sort: one comparison table, pass-by-pass array traces and 8 exam questions solved step by step.
Seoul Climate Card: Unlimited Subway and Bus Pass Guide
Seoul Climate Card: 5-day pass for 15,000 won plus 3,000 won card. Unlimited subway and buses, prices, where to buy and where it doesn't work.
Recapday Couple Mode: Why a Two-Person Group Needed Its Own Mode
How Couple Mode found its way into Recapday: what changes at two people, why a mode beat a separate app, and what I deliberately left out.
C# Interface vs Abstract Class: Differences and When to Use
C# interface vs abstract class: what each can contain, multiple interfaces, a decision guide, a payment example and typical exam questions with answers.
C# Inheritance and Polymorphism: virtual, override and new
C# inheritance and polymorphism guide: base, constructor chaining, virtual/override vs new, sealed, is/as and the classic "what does this print?" question.
SwiftUI First App: A Step-by-Step Guide for Beginners
Build your first SwiftUI app from an empty Xcode project to the simulator: App, View, VStack, @State, List and TextField in a working to-do list.
Binary Search Tree Exam Questions: Insert, Delete, Traverse
The BST property, insert, search and delete, inorder/preorder/postorder traversal, height and the degenerate case; 7 exam questions with drawn trees.
Big O Notation and Time Complexity: A Practical Guide
What Big O means and how to find the complexity of loops and recursion: O/Ω/Θ, the Master theorem, space complexity and 8 solved exercises.
ASP.NET Core Minimal API: Build Your First REST API
Build a REST API from scratch with ASP.NET Core Minimal APIs: MapGet/MapPost, route parameters, TypedResults, dependency injection, validation, curl tests.
App Store Publishing Guide: From Xcode Archive to Review
From the Apple Developer account and App Store Connect record to TestFlight and review: how to publish an iOS app and the most common rejection reasons.
Money Exchange in Seoul: US$100 = 149,500 Won in Myeongdong
We got 149,500 won for US$100 in Myeongdong, far better than the airport. Rate tips, small buy-sell spread and a free toy for a Google review.
Urban Hotel & Play: 4 Nights in Sinchon, Seoul Review
Urban Hotel & Play in Sinchon, Seoul: 4 nights for about 10,000 TRY. Spotless rooms, free drinks, a 5-PC gaming room, 5 minutes to the subway.
Incheon Airport to Seoul: The Cheapest Way Into the City
AREX all-stop train for 4,750–5,350 won or the airport bus for about 17,000 won. Incheon to central Seoul transport options, travel times and a cash tip.
How to Get a K-ETA: Bangkok to Seoul Flight and Korea Entry
We flew Bangkok to Seoul with VietJet in about 6 hours. What the K-ETA is, what it costs, who is exempt in 2026, and how to avoid fake application sites.
13 Days in Thailand Cost: 29,009 TRY Excluding Flights
13 days in Thailand for 29,009 TRY excluding flights, about 2,231 TRY a day. Accommodation, food, transport and Pattaya costs itemized.
What Is Talkamble? Turn a Walk Into a Conversation
Talkamble turns a solo walk into a voice conversation with someone walking at the same time. How it works, why it steps back from the screen, and safety.
Voice-Chat App Safety: 8 Things to Check
Before speaking with someone new, use these eight checks to understand how an app handles accounts, location, mutual consent, reporting and personal data.
Merging Videos on Device With ffmpeg: Turning Mixed Aspect Ratios Into One Vlog
How Recapday merges vertical, horizontal and still clips into one 1920x1080 vlog on the phone with ffmpeg: blurred padding, text, music, compression.
How I Built Recapday: A Decision Log From Idea to Store
The architecture behind Recapday: why identity lives in Firebase but data on my own server, why I deleted the social features, and what was irreversible.
Flutter Camera Without Forcing Orientation: Three Bugs and Their Fixes
A rotated preview, a freeze when recording starts and a dead camera: three Flutter camera bugs from Recapday and the code that fixed each one.
Firebase Auth With Your Own PHP Server: Token Verification and Account Deletion Without Composer
Identity in Firebase, data on your own server: RS256 token verification in PHP without composer, plus the account-deletion flow the stores require.
What Is Claude Design? Seven Levels of AI Design
Most people stop at level one of Claude Design and get generic work. Here are the seven levels, the costly mistake at each, and how to move up.
What Is a Harness? The Difference Between the Model and the Coding Tool (with DeepSeek)
Why does the same model give different results in different tools? Harness, agent loop and context management explained with DeepSeek.
What Is an Agent Skill? How to Write Skills That Work
Most agent skills do nothing. Here are the patterns that actually help, the rules for writing one, and the security check to run before you install.
What Is AI Slop? Building a Website That Doesn’t Look AI-Generated
Why does every AI-built website look the same? Here are the symptoms of AI slop and the concrete ways to break it in typography and copy.
Website Design Audit: Comparing Against a Reference
Can’t explain why your website falls short? Compare it with a strong reference and turn vague impressions into a concrete design audit.
AI Motion Graphics: Data, Icons and Automation
Why does AI-generated animation always look the same? Turning real data into motion, using ready-made assets, and pulling graphics out of video.
Consistency in AI Design: The Critic Loop
AI design comes out inconsistent because the model grades its own homework. Here is how an independent critic loop fixes it, and what it costs.
What Is Vibe Coding? A Realistic Beginner's Guide
What is vibe coding, how does it work, which tools do you need? A beginner's guide to AI-assisted development with Claude, ChatGPT, Cursor and Codex.
Vibe Coding Tools Compared: When to Use Claude, ChatGPT, Cursor, and Codex
A hands-on comparison of Claude, ChatGPT, Cursor, Codex and GitHub Copilot from real projects: strengths, weaknesses and when to use each one.
The Vibe Coding Method: 7 Practical Tips and the Art of Writing Prompts
Seven tips that actually work in vibe coding: writing prompts, a decision document, small tasks, tests, auditing and refactoring.
Shipping an App Store App with Full Vibe Coding: The LevelUpStudy Story
Can you ship an App Store app by coding with AI? The method that worked while building LevelUpStudy, the three real walls I hit, and the lessons.
What Is LevelUpStudy? A Study Tracker App for Exam Preparation
How LevelUpStudy makes exam preparation measurable, with focus sessions, streaks, leaderboards and a 3D study desk for your study hours.
Best Places to Visit in Pattaya: A 4-Day Local List
We spent 4 nights in Pattaya. Koh Larn's clear water, the Eiffel Tower in Terminal 21, Walking Street and a 250-baht motorbike, with real prices.
Best Places to Visit in Bangkok: A 7-Day Local List
We spent 7 nights in Bangkok. From Wat Arun to the 69-meter Big Buddha and the Dragon Temple, the places not to miss, with real prices and locations.
Emsphere Sky Beach Club and Terminal 21: Last Day in Bangkok
The free rooftop Sky Beach Club pool at Emsphere mall, a Honda scooter test ride, and Terminal 21 as our goodbye to Bangkok. Locations and prices.
Wat Phra Yai and Terminal 21: Big Buddha and an Eiffel Tower
We visited Wat Phra Yai, known as the Big Buddha, and its Yaksha guardians, then saw the Eiffel Tower inside Terminal 21. Locations and prices inside.
Koh Larn Island: Motorbike Tour and Beaches Near Pattaya
We took the ferry from Bali Hai Pier to Koh Larn, rented a motorbike for 250 baht and toured the island. Nual and Tawaen beaches, prices and routes.
Pattaya Day 1: Swensen's, Cafe Amazon and Walking Street
Our first day in Pattaya: Turkish breakfast, a beach walk, Cafe Amazon, the best ice cream at Swensen's RGP, and a night on Walking Street.
Beach by Anatolia Condo Suite: 4 Nights in Pattaya, 6,000 TL
Just 50 meters from the sea, 4 nights for 6,000 TL (~150 USD). Spotless rooms, a big pool, daily housekeeping and a location next to the mall.
Bangkok to Pattaya: The Cheapest Way, a 180-Baht Bus
We bought a 180-baht bus ticket on 12Go and left from Suvarnabhumi Terminal 2. E-ticket swap, the transfer-driver trap, and reaching your hotel by Bolt.
Wat Samphran Dragon Temple: Climbing Down a Giant Dragon
At Bangkok's pink Wat Samphran temple we rode the lift up 17 floors and climbed down inside the giant dragon. Entrance fee, transport and location.
32 Bar X, The Mall LifeStore and June Pang: Bangkok Day 5
32 Bar X, where they make their own chocolate, The Mall LifeStore full of million-dollar cars, and June Pang's creamy milk toast. Locations inside.
Wat Arun and Empire Tower: Coffee on Bangkok's 55th Floor
We explored Wat Arun, the temple clad in Chinese porcelain, then had coffee on the 55th floor of Empire Tower facing the skyline. Fees and locations.
Wat Paknam: The 69-Meter Giant Buddha in Bangkok
We visited the 69-meter seated Buddha statue at Wat Paknam in Bangkok. How to get there, entrance details and what to expect on your visit.
Wat Hong Temple and the Wat Arun Plan: Bangkok Day Two
On our second day in Bangkok, we visited Wat Hong Temple, met Buddhist monks, and saved Wat Arun for the next day.
ICONSIAM and Chinatown: Your First Day in Bangkok
Our first-day visit to ICONSIAM and Chinatown in Bangkok, including boat transport, the giant dog statue, musical fountains, and street food vibes.
Flutter: SliverAppBar for Category Headers and Search Fields
SliverAppBar search field in bottom vs flexibleSpace, sticky category chips via SliverPersistentHeader, pinned/floating/snap combos and RenderSliver error.
Flutter: Expanded vs Flexible vs Spacer, With Recipes
The difference between Expanded, Flexible and Spacer, loose vs tight fit, and four recipes that combine them: toolbar, card footer, form rows, split screen.
Flutter: BottomNavigationBar vs NavigationBar
Migrating from BottomNavigationBar to Material 3 NavigationBar: property mapping, labelBehavior, a decision guide and an adaptive shell example.
Boss Suites Nana: 7 Nights in Bangkok for 4,500 TL
Our Boss Suites Nana hotel experience: deposit details, room cleanliness, breakfast cost, and why Nana is a convenient area for staying in Bangkok.
Vasu Exchange Bangkok: Rates, Location and Our Experience
We exchanged 100 dollars for 3,252 baht at Vasu Exchange near Nana, Bangkok. Rates, location, and what to watch out for when changing money.
How to Find the Best Swift Teacher? 2026 Guide
Before you pay for Swift or iOS tutoring: what to ask in a trial lesson, SwiftUI or UIKit, a sensible learning order, and when tutoring is not worth it.
.NET Expert Teacher Selection: C# and ASP.NET Education Guide
Choosing a C# and .NET teacher or course: trial lesson questions, warning signs, when private lessons are not worth it, and a realistic learning order.
Best Flutter Teacher Selection: Mobile App Expert Guide
Private Flutter tutor, video course or bootcamp? How to judge a teacher in a trial lesson, what order to learn in, and when tutoring is not worth it.
Algorithm Teacher: Data Structures and Algorithm Analysis
How to choose a tutor for data structures and algorithms: what to ask in a trial lesson, exam versus interview prep, and the order to study topics in.
Top 5 Most Used Flutter Widgets in 2026 (Detailed Guide)
The five widgets you meet in almost every Flutter project: real project examples, performance tips and the usage patterns worth copying.
Top 5 Biggest Mistakes Developers Make (And How to Fix Them)
Even senior developers fall into these 5 critical traps. Discover experience-backed tips that will save your codebase and your career.
Top 3 Programming Languages You Must Learn in 2026
Why Rust, Python and TypeScript stand out in 2026, what each one is good for, what to build first, and a realistic order to learn them in.
How to Start Programming in 2026: A Complete Beginner's Roadmap
Want to learn programming but don't know where to start? The 2026 roadmap that works: the right language, resources and traps to avoid.
Flutter vs React Native: Which Is Better in 2026?
Can't decide between Flutter and React Native? Compare real performance, career opportunities and hands-on project experience.
Becoming a Developer in 2026: The Truths Nobody Tells You
Becoming a developer in 2026: job hunting, AI's real impact, sourced salary data from the US and Turkey, and choosing a specialty. An honest look.
Flutter Hero Animation and Page Transition Effects
Flutter Hero animations: tag matching, flight duration and curve, flightShuttleBuilder, common mistakes, and custom page transitions with PageRouteBuilder.
Flutter Explicit Animations: AnimationController Guide
Create professional animations in Flutter with AnimationController, Tween, and AnimatedBuilder. Learn all the details of explicit animations.
Flutter: Zero Effort, Maximum Impact with Implicit Animations
Add smooth animations with very little code using AnimatedContainer, AnimatedOpacity, AnimatedPositioned and other implicit animation widgets.
Introduction to OOP: Why Procedural Programming Falls Short
The journey from procedural to object-oriented programming: escaping spaghetti code and turning real problems into maintainable code.
C# Constructor: The Hidden Hero of Object Creation
What is a constructor and why do you need it? Default, parameterized and overloaded constructors explained with real examples.
C# Class and Object: Blueprint vs Product
Learn the core OOP building blocks, Class and Object, through the cake mold analogy, with Property, Method and Instance examples.
C# Access Modifiers: Lock the Doors or Leave Them Open?
What are public, private, protected and internal? How Getter/Setter methods secure data, explained with a bank account example.
Flutter: Real-Time Data Streams with StreamBuilder
Flutter StreamBuilder guide: connectionState for streams, initialData, broadcast vs single-subscription, closing the StreamController, listen() compared.
Flutter: Modern State Management with Riverpod 3
State management in Flutter with Riverpod 3: Notifier, AsyncNotifier, ref.watch vs ref.read, family, autoDispose and migration notes for old StateNotifier code.
Flutter: State Management with Provider
State management with Provider package in Flutter, ChangeNotifier, Consumer, MultiProvider usage and best practices.
Flutter: ListView Widget Usage
A practical Flutter ListView guide: lazy lists with builder, separated, itemExtent, the real cost of shrinkWrap and fixing the unbounded height error.
Flutter: GridView Widget Usage
A practical Flutter GridView guide: count, extent and builder, the two grid delegates, the childAspectRatio overflow error and the real cost of shrinkWrap.
Flutter: Asynchronous Listing with FutureBuilder
Flutter FutureBuilder: reading snapshot states in the right order, the Future-in-build mistake, the initState fix and refreshing with setState.
Flutter: TabBar and TabBarView Usage
Flutter TabBar and TabBarView: DefaultTabController vs your own TabController, keeping tab state alive, Material 3 settings, and common mistakes.
Flutter: SnackBar and SnackBarAction Usage
Flutter SnackBar with ScaffoldMessenger: undo actions, floating style, the queue problem and context errors after an await, all fixed.
Flutter: PopupMenuButton Usage and Menu Structures
Flutter PopupMenuButton for overflow menus: type-safe enums, onSelected vs onTap, a list row scenario and the mistakes to avoid.
Flutter: GestureDetector Usage and Touch Events
Tap, drag and pinch events with Flutter's GestureDetector: how it differs from InkWell, HitTestBehavior, common mistakes and a zoomable photo example.
Flutter: Form Widget and Input Validation
Flutter Form and TextFormField validation: validate() vs save(), autovalidateMode, focus handling, controller disposal and a complete login form.
Flutter: DropdownButton Usage and Features
Flutter DropdownButton and DropdownButtonFormField, the Material 3 DropdownMenu, a dependent dropdown scenario and the value assertion fix.
Flutter: Drawer Widget and Side Menu Usage
Build a side menu with Flutter Drawer: basic setup, the Material 3 NavigationDrawer, closing the menu before navigating, and the Scaffold.of context fix.
Flutter: Card Widget and Design Usage
Flutter Card guide: Material 3 Card.filled and Card.outlined, clipBehavior with images, tappable cards with InkWell, common mistakes and a product card.
Flutter: BottomNavigationBar Usage
Flutter BottomNavigationBar: currentIndex in state, keeping page state with IndexedStack, fixed vs shifting, the vanishing-items bug and a cart badge example.
Flutter: AppBar Widget and Customization
A practical Flutter AppBar guide: title, leading, actions and bottom, the Material 3 scrolled-under color change, and fixes for common mistakes.
Flutter: AlertDialog Usage and Customization
Flutter AlertDialog for confirmations, input and adaptive dialogs, plus fixes for context.mounted, StatefulBuilder and overflow bugs.
Flutter: Date and Time Pickers (DatePicker & TimePicker)
Flutter showDatePicker and showTimePicker: date ranges, localized calendars, context.mounted, an appointment scenario and the off-by-one-day bug.
Flutter: SingleChildScrollView, ListView, NestedScrollView
SingleChildScrollView vs ListView vs NestedScrollView, the keyboard overflow error, Expanded's unbounded height error and a tabbed NestedScrollView setup.
Flutter: Input Widgets and Status Indicators
When to use Switch, Checkbox, Radio, Slider and SegmentedButton in Flutter, plus progress indicators, common mistakes and a sample settings screen.
Flutter: Using FloatingActionButton (FAB)
Flutter FloatingActionButton: M3 sizes, extended FAB, positioning, hiding on scroll, the heroTag clash error and a reminders screen example.
Flutter Life Cycle: StatefulWidget and AppLifecycleState
Understanding Flutter StatefulWidget life cycle methods and application life cycle management. Using initState, dispose, didUpdateWidget, and setState.
Navigation and Data Transfer Between Pages in Flutter
Page navigation, data transfer and back stack management with Flutter's Navigator: push, pop, pushReplacement and the current PopScope for the back button.
Creating and Setting Up App Icons in Flutter
How to add custom icons for both Android and iOS in your Flutter app? Automatic icon generation with flutter_launcher_icons package.
Introduction to Swift: Optionals, Guard Let and If Let
What an Optional is in Swift, when to pick if let or guard let, the short if let syntax, nil-coalescing and optional chaining, with notes for Dart developers.
Flutter: Flexible Spaces with Spacer Widget
What Spacer is under the hood, sizing gaps with flex, how it differs from SizedBox and mainAxisAlignment, and why it breaks in scrollable areas.
Flutter: Sizing and Spacing with SizedBox
SizedBox for fixed sizes and gaps: expand, shrink and square constructors, SizedBox vs Container, why your size gets ignored, and common mistakes.
Flutter: Inner Space Management with Padding
Every EdgeInsets constructor, EdgeInsetsDirectional for RTL, SafeArea and keyboard insets, the mistakes that overflow or crash, and a login form example.
Flutter: Screen-Based Scaling with MediaQuery
Sizing by screen with MediaQuery.sizeOf, paddingOf and textScalerOf; when LayoutBuilder or FractionallySizedBox is the better tool, and the common mistakes.
Flutter: Space and Alignment Control with mainAxisSize
max vs min in mainAxisSize, how constraints interfere, why mainAxisAlignment seems to do nothing, and recipes for dialogs, bottom sheets and button groups.
Flutter: Screen Size-Based Design with LayoutBuilder
LayoutBuilder vs MediaQuery, a breakpoint layout based on Material 3 window size classes, capping content width, and the unbounded height and intrinsic errors.
Flutter: Expanding Space with Expanded Widget
A deep dive into Expanded: how the flex ratio is computed, nesting, why it only works inside Row and Column, and the three errors you see most often.
Flutter: Creating Our Own Widgets
Writing custom widgets in Flutter: const constructors and super.key, required and optional parameters, widget class vs helper method, and common mistakes.
Flutter: Detailed Usage of Center Widget
How Center relates to Align, why it fills the available space, widthFactor, why it does not center vertically in a Column, and the common mistakes.
Flutter: Fine Alignment Operations with Align Widget
Precise placement with Align: the Alignment(x, y) coordinate system, FractionalOffset, widthFactor and heightFactor, Align vs Positioned in a Stack.
Flutter: Adding Images - Assets and Image.asset
Adding images to a Flutter project: pubspec.yaml setup, Image.asset, resolution folders, SVG, network images and the most common asset mistakes.
Flutter Basics: Widget Tree, Row, Column and Stack
After learning Dart, I finally transitioned to Flutter. On my first day, I'm learning the widget tree, Row, Column and Stack structures.
Dart Error Handling: Try-Catch and Asynchronous Operations
Targeted try-catch with on, rethrow, custom exceptions, Future, async/await, timeouts, parallel waiting, and safe setState calls in Flutter with Dart.
Dart Collections: List, Set and Map (HashSet, HashMap)
When to choose List, Set or Map in Dart, how HashSet and HashMap differ, hashCode for equality, sorting, filtering, and using collections in Flutter.
Dart Interfaces and implements: Contracts for Classes
Contracts with implements in Dart, Dart 3's interface class and abstract interface class, how mixins with differ, and an example of testable code.
Dart Inheritance and Polymorphism: A Practical Guide
Inheritance in Dart with extends, super and @override, polymorphism, abstract classes, safe type checks, and Dart 3's sealed, final and base class modifiers.
Dart Enum and Composition: How to Organize Your Code
Dart 3 enums with fields and methods, exhaustive checks with switch expressions, and composition as a has-a relationship, with examples and common mistakes.
Dart Type Conversions and Static Variables Explained
Safe String-to-number conversion in Dart, int vs. double, as vs. is, and when static fields and methods make sense, with the mistakes learners make most.
Getting Started with Flutter Mobile App Development
Flutter from zero: installation overview, flutter doctor, creating and running your first project, project structure, hot reload and what to learn next.